Split up and refactor HashedObject

src/cpp/ripple/ripple_HashedObjectStore.h

@@ -0,0 +1,76 @@
+#ifndef RIPPLE_HASHEDOBJECTSTORE_H
+#define RIPPLE_HASHEDOBJECTSTORE_H
+
+/** Persistency layer for hashed objects.
+*/
+class HashedObjectStore
+{
+public:
+	HashedObjectStore (int cacheSize, int cacheAge);
+
+	bool isLevelDB()
+    {
+        return mLevelDB;
+    }
+
+	float getCacheHitRate ()
+    {
+        return mCache.getHitRate();
+    }
+
+	bool store (HashedObjectType type, uint32 index, const std::vector<unsigned char>& data,
+		const uint256& hash)
+	{
+		if (mLevelDB)
+			return storeLevelDB(type, index, data, hash);
+
+        return storeSQLite(type, index, data, hash);
+	}
+
+	HashedObject::pointer retrieve(const uint256& hash)
+	{
+		if (mLevelDB)
+			return retrieveLevelDB(hash);
+		return retrieveSQLite(hash);
+	}
+
+	bool storeSQLite(HashedObjectType type, uint32 index, const std::vector<unsigned char>& data,
+		const uint256& hash);
+	HashedObject::pointer retrieveSQLite(const uint256& hash);
+	void bulkWriteSQLite(Job&);
+
+	bool storeLevelDB(HashedObjectType type, uint32 index, const std::vector<unsigned char>& data,
+		const uint256& hash);
+	HashedObject::pointer retrieveLevelDB(const uint256& hash);
+	void bulkWriteLevelDB(Job&);
+
+
+	void waitWrite();
+	void tune(int size, int age);
+	void sweep() { mCache.sweep(); mNegativeCache.sweep(); }
+	int getWriteLoad();
+
+	int import(const std::string& fileName);
+
+private:
+    static HashedObject::pointer LLRetrieve(const uint256& hash, leveldb::DB* db);
+    static void LLWrite(boost::shared_ptr<HashedObject> ptr, leveldb::DB* db);
+    static void LLWrite(const std::vector< boost::shared_ptr<HashedObject> >& set, leveldb::DB* db);
+
+private:
+	TaggedCache<uint256, HashedObject, UptimeTimerAdapter>	mCache;
+	KeyCache <uint256, UptimeTimerAdapter> mNegativeCache;
+
+	boost::mutex				mWriteMutex;
+	boost::condition_variable	mWriteCondition;
+	int							mWriteGeneration;
+	int							mWriteLoad;
+
+	std::vector< boost::shared_ptr<HashedObject> > mWriteSet;
+	bool mWritePending;
+	bool mLevelDB;
+	bool mEphemeralDB;
+};
+
+#endif
+// vim:ts=4